Keyboard holder



FIG. 1 is a top, side perspective view of a keyboard holder;

FIG. 2 is a bottom, opposite side perspective view;

FIG. 3 is a top plan view on an enlarged scale; and,

FIG. 4 is a sectional view taken on line 4--4 of FIG. 1 on an enlarged scale, the broken line drawing of a desk and an operator's hand being shown for illustrative purposes only and forming no part of the claimed design. 

The ornamental design for a keyboard holder, as shown and described. 